| Starter | Tm | Tier | Game |
|---|---|---|---|
| Sandy Koufax | LAN | 6.49 | 196305150_PHI_LAN |
| Warren Spahn | ATL | 5.53 | 196305140_SLN_ATL |
| Whitey Ford | NYA | 4.92 | 196305140_MIN_NYA |
| Curt Simmons | SLN | 3.69 | 196305150_SLN_ATL |
| Juan Pizarro | CHA | 2.26 | 196305150_DET_CHA |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Roger Craig | NYN | -3.23 | 196305130_NYN_HOU |
| Cal McLish | PHI | -1.85 | 196305140_PHI_LAN |
| Gene Conley | BOS | -1.6 | 196305130_TEX_BOS |
| Glen Hobbie | CHN | -1.32 | 196305150_CIN_CHN |
| Don Cardwell | PIT | -1.22 | 196305150_PIT_SFN |
Based on accumulated WAA for this season up to 1963-05-15.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 2.98 | Sandy Koufax | 59 | LAN |
| +002+ | 2.94 | Dick Ellsworth | 49.7 | CHN |
| +007+ | 2.26 | Steve Barber | 72.7 | BAL |
| +008+ | 2.24 | Joe Nuxhall | 45 | CIN |
| +009+ | 2.19 | Curt Simmons | 56 | SLN |
| +010+ | 2.18 | Juan Pizarro | 50.3 | CHA |
| +012+ | 2.06 | Bob Buhl | 59.7 | CHN |
| +013+ | 1.98 | Joe Gibbon | 27 | PIT |
| +017+ | 1.87 | Orlando Pena | 52 | OAK |
| +019+ | 1.73 | Dave Morehead | 32.7 | BOS |
| +021+ | 1.71 | Ray Herbert | 49.7 | CHA |
| +023+ | 1.68 | Milt Pappas | 36.7 | BAL |
| +024+ | 1.67 | Jack Sanford | 71.7 | SFN |
| +029+ | 1.56 | Ray Washburn | 53.3 | SLN |
| +028+ | 1.56 | Carl Willey | 37 | NYN |
| +030+ | 1.55 | Johnny Klippstein | 35.3 | PHI |
| +031+ | 1.54 | Jim O'Toole | 62 | CIN |
| +033+ | 1.49 | Don Schwall | 31.3 | PIT |
| +034+ | 1.49 | Dick Stigman | 49 | MIN |
| +036+ | 1.45 | Ernie Broglio | 54.7 | SLN |
| +038+ | 1.43 | Billy O'Dell | 44.7 | SFN |
| +039+ | 1.4 | Tom Cheney | 53.3 | TEX |
| +042+ | 1.31 | Larry Jackson | 63.3 | CHN |
| XXXXX | 1.23 | Earl Wilson | 50.3 | BOS |
| XXXXX | 1.22 | Al Jackson | 63.7 | NYN |
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